God doesn't need us to worship him, its not for his benefit when we do.
Its us who need to worship him, it puts our lives and being into perspective when we do.
And there is nothing wrong in thanking our creator for bringing our animation into being.
No. I don't feel any fear.
I believe in him through my own free choice not out of fear.
I also understand that if I go against his will that I would draw retribution of some sort.
Not that my actions would affect God, but there is an order of things and if I go against it then I would injure...
There are talismans in the book of AbraMelin but they dont tell you how to change yourself back.
Ive never done the 6 months dedication so I would say that the only way to change back would be revealed to you by one of the entities you would have to deal with during/after the dedication.